Perform direct routing of mouse events when the pointer is locked.

content/browser/renderer_host/render_widget_host_delegate.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/renderer_host/render_widget_host_delegate.h"
 
 #include "build/build_config.h"
 #include "components/rappor/public/sample.h"
 #include "content/browser/renderer_host/render_view_host_delegate_view.h"
 #include "ui/gfx/geometry/rect.h"
@@ skipping 54 matching lines @@
 blink::WebDisplayMode RenderWidgetHostDelegate::GetDisplayMode(
     RenderWidgetHostImpl* render_widget_host) const {
   return blink::WebDisplayModeBrowser;
 }
 
 bool RenderWidgetHostDelegate::HasMouseLock(
     RenderWidgetHostImpl* render_widget_host) {
   return false;
 }
 
+RenderWidgetHostImpl* RenderWidgetHostDelegate::GetMouseLockWidget() {
+  return nullptr;
+}
+
 TextInputManager* RenderWidgetHostDelegate::GetTextInputManager() {
   return nullptr;
 }
 
 bool RenderWidgetHostDelegate::IsHidden() {
   return false;
 }
 
 RenderViewHostDelegateView* RenderWidgetHostDelegate::GetDelegateView() {
   return nullptr;
@@ skipping 12 matching lines @@
     rappor::Sample* sample) {
   sample->SetStringField("Domain", "Unknown");
   return false;
 }
 
 WebContents* RenderWidgetHostDelegate::GetAsWebContents() {
   return nullptr;
 }
 
 }  // namespace content